CN1877129B - Centrifugal fan - Google Patents
Centrifugal fan Download PDFInfo
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- CN1877129B CN1877129B CN2005100778061A CN200510077806A CN1877129B CN 1877129 B CN1877129 B CN 1877129B CN 2005100778061 A CN2005100778061 A CN 2005100778061A CN 200510077806 A CN200510077806 A CN 200510077806A CN 1877129 B CN1877129 B CN 1877129B
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- centrifugal fan
- vane construction
- air storing
- flabellum group
- air
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Abstract
The invention relates to an eccentric fan, which comprises a frame, the first wheel blade, the second wheel blade and at least one driver. Wherein, the frame has a wind outlet, while it contains air storage groove with an inlet and an outlet; the first and second wheel blades are arranged inside the frame, with the first and second leaf groups; the first leaf group is opposite to the inlet of air storage groove, while the second group is opposite to the outlet; the driver drivers the first and second wheel blades. The inventive air storage groove can improve the pressurize effect of airflow, to improve the heat emission ability.
Description
Technical field
The present invention relates to a kind of fan, relate in particular to a kind of centrifugal fan.
Background technique
In existing electronics, its inner standing electrical assembly just like central processing unit (CPU) (CPU) and so on, this type of electrical assembly is the many assemblies of heating value, and its performance reduces with its temperature rising.At this moment, must when producing, rapidly heat energy be shifted out heat, so the general fan that adopts is realized quick heat radiating for making electrical assembly keep certain performance.
At present common fan has two kinds of axial flow fan and centrifugal fans, and wherein, centrifugal fan can be brought into play preferable radiating effect because of the higher air-flow of pressure can be provided, so become one of main flow of present fan.As shown in Figure 1, existing centrifugal fan 1 comprises housing 11, vane construction 13 and drive unit 15, wherein, housing 11 has exhaust outlet 111, vane construction 13 and drive unit 15 are arranged in the housing 11, and the flabellum group 131 of vane construction 13 is oppositely arranged with exhaust outlet 111, therefore when 13 rotations of drive unit 15 driving wheel impeller structures, 131 pairs of air pressurized of flabellum group are to produce air-flow, and the air-flow that is produced outwards blows out via exhaust outlet 111.
Yet existing centrifugal fan 1 only has the unistage type pressurization, so its pressurized effect is limited.
Therefore, provide one of current just important topic of a kind of centrifugal fan of the pressurized effect that can improve air-flow effectively.
Summary of the invention
In view of the foregoing, the technical problem to be solved in the present invention provides a kind of centrifugal fan that can effectively improve the air-flow pressurized effect.
For realizing described purpose, centrifugal fan of the present invention comprises housing, first round impeller structure, second vane construction and at least one first drive unit.In centrifugal fan of the present invention, housing has exhaust outlet, enclosure interior is provided with at least one first air storing duct, first air storing duct has first inlet, first outlet and at least one first cyclone are offset element, in order to eliminate the cyclone that air-flow produced by described first air storing duct, the first round impeller structure and second vane construction are set in the housing, and have the first flabellum group and the second flabellum group respectively, first inlet of the first flabellum group and first air storing duct is oppositely arranged, first outlet of the second flabellum group and first air storing duct is oppositely arranged, flabellum in described second vane construction is oppositely arranged with axial direction and described first round impeller structure, and first drive unit drives the first round impeller structure and second vane construction.
As mentioned above, be provided with air storing duct in the housing because of centrifugal fan of the present invention, thus can utilize the design of air storing duct to improve the pressurized effect of air-flow, and then improve the heat dissipation potential of centrifugal fan.
Description of drawings
Fig. 1 is the schematic representation of existing centrifugal fan;
Fig. 2 is the schematic representation of the centrifugal fan of the preferred embodiment for the present invention;
Fig. 3 is the schematic representation of the centrifugal fan of another preferred implementation of the present invention.
Description of reference numerals
1 centrifugal fan, 11 housings
111 exhaust outlets, 13 vane constructions
131 flabellum groups, 15 drive units
2 centrifugal fans, 21 housings
211 exhaust outlets, 212 wind inlets
213 air storing duct 213a inlet
23 vane constructions, 231 flabellum groups
25 vane constructions, 251 flabellum groups
27 drive units, 3 centrifugal fans
31 housings, 311 exhaust outlets
312 wind inlets, 313 air storing ducts
313a inlet 313b outlet
The 313c cyclone is offset element 315 air storing ducts
The 315c cyclone is offset element 33 vane constructions
331 flabellum groups, 35 vane constructions
351 flabellum groups, 37 drive units
39 vane constructions, 391 flabellum groups
Embodiment
The centrifugal fan of preferred implementation of the present invention is described hereinafter with reference to relevant drawings.
Please refer to Fig. 2, Fig. 2 is the schematic representation of the centrifugal fan of the preferred embodiment for the present invention.As shown in Figure 2, the centrifugal fan 2 of the preferred embodiment for the present invention comprises housing 21, vane construction 23, vane construction 25 and at least one drive unit 27.
Housing 21 has exhaust outlet 211 and wind inlet 212, and the inside of housing 21 is provided with air storing duct 213, and this air storing duct has inlet 213a and outlet 213b.In the present embodiment, air storing duct 213 is an annulus, and it is positioned at the upper inside of housing 21, in order to temporary air, so that the pressure accumulation function to be provided.
Moreover, air storing duct 213 has cyclone payment element 213c, this cyclone payment element is set at the position that may produce cyclone (vortex) in the air storing duct 213, and for example corner in the air storing duct 213 or outlet 213b place are in order to the cyclone that air-flow produced of elimination by air storing duct 213.Because the generation of cyclone will reduce the pressure accumulation function of air storing duct 213, thus cyclone payment element 213c is set with the elimination cyclone, and then guarantee the pressure accumulation function of air storing duct 213.In the present embodiment, cyclone is offset element 213c and be can be rib, platy structure or curved structure.In addition, a plurality of cyclones also can be set in the air storing duct 213 offset element 213c, to strengthen eliminating the effect of cyclone.
As shown in Figure 2, vane construction 23 is set in the housing 21 and has flabellum group 231, and wherein, flabellum group 231 is oppositely arranged with the inlet 213a of air storing duct 213.In addition, vane construction 25 also is set in the housing 21 and has flabellum group 251, wherein, flabellum group 251 is oppositely arranged with the outlet 213b of air storing duct 213 and the exhaust outlet 211 of housing 21, and the flabellum in the promptly described vane construction 25 is oppositely arranged with axial direction and described vane construction 23.In the present embodiment, these vane constructions 23,25 are with the serial fashion configuration, and the diameter of vane construction 25 is greater than the diameter of vane construction 23, and these vane constructions 23,25 are all centrifugal vane construction.The shape of the flabellum group 231,251 of these vane constructions 23,25 can be rectangle, polygonal or is similar to L shaped.In addition, in order to strengthen the pressurization effect of 25 pairs of air-flows of vane construction, the shape of the flabellum group 251 of vane construction 25 be preferably be similar to L shaped.In addition, the turning of these flabellum groups 231,251 can be designed to smoothed curve, and the bearing of trend of the end of described flabellum group 231,251 is vertical with the rotor shaft direction of described flabellum group 231,251.
In the present embodiment, when drive unit 27 driving wheel impeller structures 23 rotated, vane construction 23 sucked air from wind inlet 212, import in the air storing duct 213 through inlet 213a again.Afterwards, the air in the air storing duct 213 blows to flabellum group 251 from exporting 213b, and air is discharged towards exhaust outlet 211.Wherein, cyclone in the air storing duct 213 is offset element 213c can suitably bring into play the effect of eliminating cyclone, at this moment, because 23 pairs of air-flows of vane construction exert pressure, so the pressure of air-flow that blows to flabellum group 251 through the outlet 213b of air storing duct 213 is greater than ambient pressure (air pressure of wind inlet 212 sides).Then, will be when vane construction 25 from the air-flow pressurization of the outlet 213b of air storing duct 213 and when exhaust outlet 211 blows out, the air-flow that leaves exhaust outlet 211 is further pressurizeed, and obtains anticyclonic air-flow.
Be noted that centrifugal fan of the present invention is not limited to present embodiment, for example, first round impeller structure can be an axial type vane construction (not shown), and second vane construction is centrifugal vane construction.In addition, centrifugal fan of the present invention can comprise a plurality of drive unit (not shown)s, to drive different vane constructions respectively, foregoing vane construction 23,25.
In addition, centrifugal fan of the present invention can comprise a plurality of vane constructions and a plurality of air storing duct, for example three vane constructions and two air storing ducts, four vane constructions and three air storing ducts or five vane constructions and four combinations such as air storing duct.Moreover, also can correspond to same air storing duct, for example the combination of five vane constructions and two air storing ducts by a plurality of vane constructions.For making the present invention clearer, below be that example illustrates centrifugal fan of the present invention with three vane constructions and two air storing ducts.
Please refer to Fig. 3, Fig. 3 is the schematic representation of the centrifugal fan of another preferred implementation of the present invention.As shown in Figure 3, the centrifugal fan 3 of another preferred implementation of the present invention comprises housing 31, vane construction 33, vane construction 35, vane construction 39 and at least one drive unit 37.The difference of present embodiment and last mode of execution is that the air storing duct quantity of present embodiment is more, so that further strengthen the stream pressure of exhaust outlet by means of multistage pressing mode.In the present embodiment, the diameter that only need make vane construction 39 gets final product greater than the diameter of vane construction 35, wherein, and being shaped as rectangle, polygonal or the being similar to L shaped of flabellum group 391 of vane construction 39.The shape of the flabellum group 331,351 of vane construction 33,35 also can be rectangle, polygonal or is similar to L shaped.
Then, the mode of action to the centrifugal fan 3 of present embodiment is elaborated.In the present embodiment, housing 31 has exhaust outlet 311 and wind inlet 312, the inside of housing 31 is provided with air storing duct 313 and air storing duct 315, wherein, air storing duct 313 has inlet 313a, outlet 313b and cyclone is offset element 313c, and air storing duct 315 has inlet 315a, outlet 315b and cyclone is offset element 315c.In the present embodiment, air storing duct 313 and air storing duct 315 are two stacked annuluses up and down, and it is positioned at the upside of housing 31 inside, in order to temporary air, so that multistage pressure accumulation function to be provided.
Vane construction 33,35,39 is set in the housing 31, and has flabellum group 331,351,391 respectively.Wherein, flabellum group 331 is oppositely arranged with the inlet 313a of air storing duct 313, flabellum group 351 is oppositely arranged with the outlet 313b of air storing duct 313 and the inlet 315a of air storing duct 315, and flabellum group 391 is oppositely arranged with the outlet 315b of air storing duct 315 and the exhaust outlet 311 of housing 31.In the present embodiment, vane construction 33,35,39 disposes with serial fashion.
In the present embodiment, vane construction 33,35,39 is driven by drive unit 37 simultaneously.Certainly, drive unit 37 also can only drive a certain vane construction, drives other not driven vane construction by this vane construction again.When vane construction 33,35,39 rotates, vane construction 33 sucks air from wind inlet 312, be blown in the air storing duct 313 through inlet 313a again, then vane construction 35 sucks the outlet 313b of air from air storing duct 313, and with air through the inlet 315a be blown in the air storing duct 315, last vane construction 39 sucks the outlet 315b of air from air storing duct 315, and blows out towards exhaust outlet 311.At this moment, because the air pressure of air storing duct 315 is greater than the air pressure of air storing duct 313, and the air pressure of air storing duct 313 is greater than ambient pressure (air pressure of wind inlet 312 sides), so vane construction 33,35,39 can have the effect of two-stage pressurization, so its pressurization effect is more remarkable.
In sum, owing to be provided with air storing duct in the housing of centrifugal fan of the present invention, as air storing duct 213,313,315, so can utilize the design of air storing duct to improve the pressurized effect of air-flow, even can have multistage pressurization effect, and then can improve the heat dissipation potential of centrifugal fan.
The above for the illustrative explanation, is not to be limitation of the present invention only.Any equivalents of under the prerequisite that does not exceed design of the present invention and scope the present invention being made or modification all should fall into appended claim scope required for protection.
Claims (20)
1. centrifugal fan comprises:
Housing, it has exhaust outlet, and this enclosure interior is provided with first air storing duct, and described first air storing duct has first inlet, first outlet and at least one first cyclone and offsets element, in order to eliminate the cyclone that air-flow produced by described first air storing duct;
First round impeller structure, it is set in the described housing and has the first flabellum group, and first inlet of described first flabellum group and described first air storing duct is oppositely arranged;
Second vane construction, it is set in the described housing and has the second flabellum group, first outlet of described second flabellum group and described first air storing duct is oppositely arranged, and the flabellum in described second vane construction is oppositely arranged with axial direction and described first round impeller structure; And
At least one first drive unit, it drives the described first round impeller structure and second vane construction.
2. centrifugal fan as claimed in claim 1, wherein, described first round impeller structure is blown into air in described first air storing duct through described first inlet; Described second vane construction sucks air and blow out towards described exhaust outlet from described first outlet.
3. centrifugal fan as claimed in claim 1, wherein, it is rib, platy structure or curved structure that described first cyclone is offset element.
4. centrifugal fan as claimed in claim 1, wherein, described first cyclone is offset corner or described first outlet port that element is positioned at described first air storing duct.
5. centrifugal fan as claimed in claim 1, wherein, the diameter of described second vane construction is greater than the diameter of described first round impeller structure.
6. centrifugal fan as claimed in claim 1, wherein, described first drive unit drives the described first round impeller structure and second vane construction simultaneously, perhaps, only drives described first round impeller structure or described second vane construction.
7. centrifugal fan as claimed in claim 6, wherein, another vane construction that is driven by described first drive unit is not driven by the described vane construction that is subjected to this first drive unit driving.
8. centrifugal fan as claimed in claim 1 wherein, also comprises second drive unit, and described first drive unit and this second drive unit drive described first round impeller structure and described second vane construction respectively.
9. centrifugal fan as claimed in claim 1, wherein, the described first round impeller structure and second vane construction are centrifugal vane construction or axial type vane construction.
10. centrifugal fan as claimed in claim 1, wherein, the described first round impeller structure and second vane construction dispose with serial fashion.
11. centrifugal fan as claimed in claim 1, wherein, being shaped as polygonal or the being similar to L shaped of described first flabellum group or the second flabellum group.
12. centrifugal fan as claimed in claim 11, wherein, this polygonal is a rectangle.
13. as claim 11 or 12 described centrifugal fans, wherein, the turning of the described first flabellum group or the second flabellum group is a smoothed curve.
14. as claim 11 or 12 described centrifugal fans, wherein, the bearing of trend of the end of the described first flabellum group or the second flabellum group is vertical with the rotor shaft direction of the described first flabellum group or the second flabellum group.
15. centrifugal fan as claimed in claim 1 wherein, also comprises:
At least one second air storing duct, it is positioned at described enclosure interior, and this second air storing duct has second inlet, second outlet and at least one second cyclone and offsets element, in order to eliminate the cyclone that air-flow produced by this second air storing duct;
The third round impeller structure, it is set on the described first round impeller structure, and has the 3rd flabellum group,
Wherein, described second inlet of described the 3rd flabellum group and described second air storing duct is oppositely arranged, and described second outlet is oppositely arranged with the described first flabellum group.
16. centrifugal fan as claimed in claim 15, wherein, described third round impeller structure is centrifugal vane construction or axial type vane construction.
17. centrifugal fan as claimed in claim 15, wherein, being shaped as polygonal or being similar to L shaped of described the 3rd flabellum group.
18. centrifugal fan as claimed in claim 17, wherein, this polygonal is a rectangle.
19. centrifugal fan as claimed in claim 15, wherein, it is rib, platy structure or curved structure that described second cyclone is offset element.
20. centrifugal fan as claimed in claim 15, wherein, described second cyclone is offset corner or described second outlet port that element is positioned at described second air storing duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100778061A CN1877129B (en) | 2005-06-09 | 2005-06-09 | Centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100778061A CN1877129B (en) | 2005-06-09 | 2005-06-09 | Centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1877129A CN1877129A (en) | 2006-12-13 |
| CN1877129B true CN1877129B (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100778061A Expired - Fee Related CN1877129B (en) | 2005-06-09 | 2005-06-09 | Centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1877129B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148001A (en) * | 2013-02-22 | 2013-06-12 | 吴钰 | Double ducted-fan blower |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1493922A (en) * | 1973-12-05 | 1977-11-30 | Smiths Industries Ltd | Impeller apparatus |
| FR2564531B1 (en) * | 1984-05-15 | 1992-04-30 | Solyvent Ventec Ste Lyonn Vent | CENTRIFUGAL FAN |
| CN2512115Y (en) * | 2001-10-30 | 2002-09-18 | 元山科技工业股份有限公司 | Radiator |
| CN1441170A (en) * | 2002-02-27 | 2003-09-10 | 汉拏空调株式会社 | Fan and cover member |
| TW562899B (en) * | 2001-10-01 | 2003-11-21 | Kondo Kogyo Kk | Multi-stage centrifugal fan |
| CN1465868A (en) * | 2002-07-02 | 2004-01-07 | ÷˹���ɷݹ�˾ | Stabilizer for noise-proof and vortex-proof |
| CN1504647A (en) * | 2002-12-02 | 2004-06-16 | 台达电子工业股份有限公司 | Centrifugal fan with multilayer impeller |
| CN2679401Y (en) * | 2004-01-12 | 2005-02-16 | 陈申岳 | Commutation coupler structure of series same steering axial fan |
-
2005
- 2005-06-09 CN CN2005100778061A patent/CN1877129B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1493922A (en) * | 1973-12-05 | 1977-11-30 | Smiths Industries Ltd | Impeller apparatus |
| FR2564531B1 (en) * | 1984-05-15 | 1992-04-30 | Solyvent Ventec Ste Lyonn Vent | CENTRIFUGAL FAN |
| TW562899B (en) * | 2001-10-01 | 2003-11-21 | Kondo Kogyo Kk | Multi-stage centrifugal fan |
| CN2512115Y (en) * | 2001-10-30 | 2002-09-18 | 元山科技工业股份有限公司 | Radiator |
| CN1441170A (en) * | 2002-02-27 | 2003-09-10 | 汉拏空调株式会社 | Fan and cover member |
| CN1465868A (en) * | 2002-07-02 | 2004-01-07 | ÷˹���ɷݹ�˾ | Stabilizer for noise-proof and vortex-proof |
| CN1504647A (en) * | 2002-12-02 | 2004-06-16 | 台达电子工业股份有限公司 | Centrifugal fan with multilayer impeller |
| CN2679401Y (en) * | 2004-01-12 | 2005-02-16 | 陈申岳 | Commutation coupler structure of series same steering axial fan |
Non-Patent Citations (1)
| Title |
|---|
| CN 1465868 A,说明书摘要、摘要附图. |
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| Publication number | Publication date |
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| CN1877129A (en) | 2006-12-13 |
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Granted publication date: 20101124 Termination date: 20210609 |